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    Advanced encoding options (codec, quality, resolution, audio, fps, split)

    Drop your input, pick the target format, and download the converted file.

    How the conversion runs. The encoding happens in your browser through FFmpeg.wasm. The file never leaves your device; nothing is uploaded to a server. Pick the output format from the dropdown above the file picker, drop the source, and the page returns a downloadable result when the encode finishes.

    Container repack vs re-encode. Switching between MP4, WebM, MOV, AVI, and MKV repackages the existing streams without re-encoding, so the original video bitrate, frame rate, and resolution are preserved exactly. Switching to an audio format (MP3, AAC, OGG, FLAC, M4A, WAV) extracts the audio track and re-encodes it. Pick the MP3 bitrate from the selector above: 128 kbps for a small file, 192 kbps default, 256 or 320 kbps for higher quality. FLAC and WAV are lossless and ignore the bitrate setting.

    In-Browser HD Video Converter

    Convert HD video to MP4, WebM, MOV, AVI, or MKV - or pull the audio track to MP3, AAC, OGG, FLAC, M4A, or WAV - right in your browser. Files stay on your device: the converter runs locally via FFmpeg.wasm, with no upload, no install, and no account.

    Four things this in-browser video converter does: convert formats, extract audio, choose the MP3 bitrate, and make a GIF preview.
    Convert, extract audio, pick a bitrate, or make a GIF preview - all without uploading.

    Key features

    HD video converter features: convert in-browser without uploading, extract audio as MP3 or WAV, choose MP3 bitrate from 128 to 320 kbps, or make a GIF preview from any clip.
    Four capabilities of the in-browser HD video converter.
    • Convert in the browser. Pick the output format from the dropdown above the file picker, drop the source, and download the result.
    • Extract just the audio. Pull the track out as MP3, AAC, OGG, FLAC, M4A, or WAV without sending the source to a server.
    • Choose the MP3 bitrate. 128 kbps for a small file, 192 kbps standard (the default), 256 kbps high, or 320 kbps maximum; FLAC and WAV stay lossless and ignore the setting.
    • Make a GIF preview. A clip becomes a GIF downsampled to 10 frames per second and 480 px wide, small enough to share.

    When to use it

    Use this when you would rather not upload a clip to a server, when the network is slow, or when the source contains anything you want to keep local. For the original server-side FFmpeg tool on this site, see video-converter.html.

    Compress video online free

    Move an HD clip between MP4, WebM, MOV, AVI, and MKV containers right in the browser without re-encoding - the source bitrate, frame rate, and resolution are preserved exactly while the container swap repackages the streams into the requested wrapper. Picking a more efficient container that the recipient supports often shaves the file size on disk because modern containers like WebM and MP4 carry less per-frame metadata overhead than older wrappers; the repack runs locally on the device, so the source file never leaves the laptop or phone.

    To compare the In-Browser HD Video Converter with server-side converters and cloud upload workflows - and see a decision framework for when each fits your situation - read HD Video Converter vs alternatives: which to pick.

    ← Back to Video Tools

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    • Camera Test - Free camera test online: live preview, resolution readout, switch front and back camera, capture
    • Video And SlideShow Maker - Video maker online - build an MP4 slideshow from a sequence of images with optional audio.
    • Video Tools - Change MOV to MP4, turn photos into a video, or run FFmpeg filter chains in your browser - three
    • Online Video Trimmer - Online Video Trimmer - Trim an MP4, MOV, or WebM video to the exact time range you need, right in
    • Video to GIF Converter - Video to GIF Converter - Convert a VIDEO input into a GIF output - one step, in the browser.
    • Audio Trimmer - Audio Trimmer - Trim a audio to the time range you need, right in the browser.
    • Remove Audio from Video - Remove Audio from Video - Strip the audio track from a video file, right in the browser.
    • Video Compressor - Video Compressor - reduce the byte size of a video file in the browser, no upload.

    Tags: #video, #converter

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    Frequently Asked Questions

    What does the HD Video Converter do?

    Convert HD video files between common formats in your browser.

    When should I use the HD Video Converter?

    When you would rather not upload a clip to a server - the conversion runs locally on your device, so it suits private footage, a slow network, or working offline.

    What complementary tool works alongside it?

    See the original video converter for the server-based version on this site.

    Where do my files end up?

    Inputs are processed locally and discarded when the page closes.

    How do I pick the output format?

    Format options are listed in the dropdown above the file picker.